Excavator bucket



Nov 3 H. J. BENTSON EXCAVATOR BUCKET Filed July 28, 1924 2 Sheets-Sheet l Nov. 3, 1925.` 1,560,136

H. J. BENTsoN EXCAVATOR BUCKET Filed July 28, 1924 2 Sh'eetl-Sheet 2 Patented Nov. 3, 1925.

UNITED STATES 1,560,136 PATENT OFFICE.

HANS J'. BENTSON, 0F IUSIEGON, HICHIGAN, ASSIGNOB T0 AUSTIN IACHINEBY COR- POBATION, OF TOLEDO, y OHIO, A CORPORATION 0F VIRGINIA.

EXCAVATOB BUCKET.

Application led July 28,

To all whom it may conce/m:

Be it known that I, HANS J. BnN'rsoN, a citizen of the United States, residing in Muskegon, in the county of Muskegon and State of Michigan, have invented a new and usefulvlmprovement in Excavator Buckets, of which the following is a speciiicaton.

My invention relates to excavating buckets, such as are used, for example, upon trenching machines which are provided with ,w an endless series of buckets mounted to Y travel around aisprocket upon a frame ex tending rearwardly from the body of the machine and adapted to be dis osed in a trench as the same is cut by digging elements on said buckets.

The principal object of the invention is the provision 'of an extension member pro. vided with improved means for attaching the same to a bucket of this "character in order to increase the width of the cut made thereby, said means being adapted to secure `the extension in place in such firm and strong manner that it forms practically a continuation of the body itselt.

While l have shown the invention in relation to buckets which are provided with digging elements or teeth, it will be evident that it is readily ada table to ordinary conveyer buckets, or the ike, for increasing the capacity thereof when, and only when occasion demands.

Numerous other objects and advantages ofy the invention will be a arent as it is better understood from the slowing description, which, taken coniiecion with tfhe acoman rawln sc oses a pre erre embodunubt thereos Referring to the drawin Figure 1 is an elevationa view of the bottom side of an excavator bucket in which my invention is embodied; and Y Fig. 2 is an enlar d detail view of one of the extension mem rs, being taken from the front side thereof.

Upon the drawings, illustrating the best manner in which I have contemplated applyn ing the principles of the invention, the reference c aracter 11 indicates the body of an excavator bucket which is of substantially scoop formation and has a forward portion. 12 formed .to have teeth 13 secured thereto, which teeth form the-.regular digging 'elements 'of the bucket. They are attached b means of bolts 14 and 15 extending throng 1924. ,Serial No. 728,539.

slots 16 and 17, respectively, in the teeth and through apertures 18land 19 formed in the ing portion 12 thereof. The portion of ,the

tooth `surrounding the slot 17 is counter-v sunk, as indicated at 21, so that the head of the bolt 15` will not interfere with the di ging action, and a recess 22 is formed on t e ront face of each tooth 13, the outer wall of said recess being hooked inwardly, as indicated at 23, and adapted to engage'over the front edge of the attachin portion 12 in the bucket. The opposite wa l of said recess is disposed in a channel 24 between the body of the bucket and the forward portion 12 thereof on the under side and in this manner the teeth are firmly held in place so that they are rigid with the bucket when the latter is in action. The number of the apertures 18 and 19 may be suiiicient to permit the positioning of any number of teeth which may be required or permitted by the dimensions of the bucket.

For the purpose of extending the width of the cut which may be made by the trenching machine with which the buckets 11 are employed, I provide side extensions 25, which are shown attached to the bucket in Fig., 1 of the drawings and one 0i which is shown in detail in Fig. 2'.. Said extensions are provided with rounded portions 26 adapted to conform to the contour of the under side of the bucket to which the erltensions are attached by means of bolts 27 extending through a rtures 28 in the extension members an corresponding apertures in the body of the bucket. Said entension members are each provided with an integral tooth 29, having a cutting edge 31 and a spur 32 adapted to hook over the forward portion 12 of the bucket in the manner of the portions 23 of the teeth 13..y

Said extension members are provided with attaching walls 33 and 34 at the rear and side, which walls are adapted to have teeth 35 and 36 attached thereto by means of bolts 37 extendingx .through suitable recesses, or slots 38 in t e teeth and through apertures 39 and 41 in said walls. The outer teeth 36 are iiared outwardly to-cutti edges 42 and all the teeth, both on the buc` et proper and on the extension members, are adjustable by reason of the bolt slots provided therein. The forward rejections, or lugs, 29 on the extension members hold said memis overcome by the use of said' lugs 29 formed as shown and described. These lugs successively prevent the loosening or breaking off of the extension members, and

` gaging over said front edge o it will be noted that they serve the further function of providing an additional digging element.

, It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts, without departing from the spirit and scope of the invention or sacrificing all of its material ladvantages, the form iiereinbefore described being merely a preferred embodiment thereof.

I claim:

1. A digging bucket for excavators and the like, comprising a main bod having digging elements at the forward e ge thereof,fand an extension member secured to said bodyl and having a forward Projection enthe body, the extended portion of said extension member being provided with additional digging elements.

2'. A digging bucket for excavators and the like, comprising a main bod having digging elements at the forward e ge therel of, and an extension member secured to said body and having a forward projection formed with a hooked portionengaging digging elements at the forward edge there' of, and an .extension member secured to said body and having a forward projection formed with a hooked portion en aging over said front edge of the body, t e ex` tended portion of said extension member being provided with additional digging ele-l ments and said forward projection having 'a cutting edge and thus itself constituting one of the digging elements.

4. A digging bucket, comprising a'main body provided with digging elements at its forward edge, and an extension. member having a portion conforming to the contour `of said body and ada ted to be secured aving a retaining v thereto, said member flange extendin forwardly and engaging over the edge o the bucket and the extended portion of said member being adapted to have additional digging elements secured thereto.

5. A digging bucket, comprising a main body extension members adapted to be secured to the opposite sides of said body, said members each being formed with an attaching portion conforming to the contour. of a side portion of the body and a retalnmg lug extending forwardly and engagmg over the front edge of said body, and detachable digging elements adapted to be secured to the forward edge lof said body and to said extension members.

HANSl J. BENTSON. 

